J.J. Thomson identified the electron, a sub-atomic particle with a negative charge, thus demonstrating that atoms were not indivisible but composed of smaller, charged particles.
What discovery by J.J. Thomson in 1900 revolutionized the understanding of atomic structure?
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J.J. Thomson’s discovery of the electron in 1900 revolutionized atomic structure understanding. This subatomic particle’s presence suggested that atoms were not indivisible, introducing the notion of a negatively charged electron within a positively charged atom, laying the groundwork for modern atomic theory.